42
3) ONLY COMPRESSOR DOES NOT RUN
a) Single phase systems 230V - 1 - 50 Hz
OK
YES
OK
NO
OK
YES
NO
YES
YES
Refrigerant gas shortage.
Rotor may be locked up.
Temperature of compressor
is abnormally high.
Either overload relay or
internal protector is working.
(Either OLR or 49C).
Replace compressor.
Charge refrigerant gas
(R22)
Check compressor motor
capacitor. (Either C1 or BC).
Check power supply voltage.
Voltage is abnormally low.
Check compressor.
There is a possibility of
locked rotor.
Measure resistance of
compressor motor winding.
Outdoor unit AE522SH
Check continuity between
terminals on the magnetic
contactor (MG).
Contact power utility company to
have power voltage restored to
normal
90% or more of
rated voltage.
YES
